Embryo loading device used for veneer horizontal jointing machine

ABSTRACT

The invention relates to an embryo loading device used for veneer horizontal jointing machine. The embryo loading device is characterized by comprising a clutch gear wheel part (3) and a rolling wheel part (4), wherein the clutch gear wheel part (3) is formed by a left shaped box frame (3T) and a right shaped box frame (3P), a clutch wheel (3.1), two drive shafts (3.2) and pinion (3.3). The rolling wheel part (4) according to the first embodiment of the invention is formed by a pair of two double roiling wheels (4K) composed of a rolling wheel rim (4.1), a main rolling wheel (4.2), an auxiliary rolling wheel (4.3), a polycentric coupling (4.4) and a sliding rail (4.5). In the rolling wheel part (4) according to the second embodiment of the invention, two clutch rollers (4.1C) are replaced for two double rolling wheels (4K).

TECHNICAL FIELD

The invention relates to the field of wood processing technology, to anembryo loading device used for the veneer horizontal jointing machine.

BACKGROUND OF THE INVENTION

A technical solution involving an embryo loading device with a rollingshaft and a horizontal roller used for the veneer horizontal jointingmachine has been used previously in the wood veneer processing industry(FIG. 1a ) comprises a pair of rollers close to each other, having acohesive structure and the same horizontal shaft, perpendicular to theguide bar that are arranged under the sliding table and the circle ofthe rollers tangential to the surface of the sliding table are rotatedround in the direction of rolling of the guide bar. Above the pair ofthe rollers is a pair of rolling wheels, each of which has anindependent horizontal shaft which is not perpendicular to the guide barand deviates from the rollers by an angle about 2-5 degrees, when viewedfrom the top, two shafts of the rolling wheel create an obtuse angleabout 184 to 190 degrees in the front of the direction of the guide bar.A pair of free-rotating rolling wheels (not driven) can be shrugged upand pressed down at the same time and adjusted to press on the rollerswith adjustable pressure.

When the machine operates, two veneer sheets loaded on the ends of theguide bar will be fed into the machine by two rolling wheels on the topand two rollers on the bottom. With this structure, two veneer sheetsare rolled into the machine in the direction of the guide bar, at thesame time are spliced together at two opposite sides at the thicknessthereof.

The disadvantage of this solution is that the rolling wheel and rollershave no parallel shaft each other, so when the machine operates, theonly interact with each other at one point via the veneer sheet, thusnot creating a stable effect and not easy to use.

Also known is the embryo loading device that has a rolling wheelarranged on the surface of a rotating disc (FIG. 1b ) comprises twovertical round discs arranged side by side on both sides of the guidebar, behind a workpiece loading mouth (workpiece consists of two veneersheets), the upper side of two round discs is a rough surface that isplaced on par with the machine's sliding table and is driven in oppositedirections. When viewed from the direction of loading the workpiece, theleft round disc rotates counterclockwise and the right round discrotates clockwise. Above the two sides of the rotating disc is a pair offree-rotating rolling wheels (not driven) having a cohesive structureand the same rotating shaft, the rolling wheel shaft is horizontal andperpendicular to the guide bar, parallel to the radial straight line ofboth sides of the rotating disc, the rolling shaft does not cutvertically with the rotating disc shaft but deviates back (according tothe direction of the guide bar) a distance from 2 mm to 5 mm. The pairof rolling wheels can be shrugged up and pressed down at the same timeand adjusted to press on the outside rim of the disc with adjustablepressure.

When the machine operates, two veneer sheets loaded on the ends of theguide bar will be rolled into the machine by two rolling wheels on thetop and two rotating, discs on the bottom. With this structure, twoveneer sheets are rolled into the machine in the direction of the guidebar, at the same time two opposite sides at the thickness thereof arespliced together.

The disadvantage of this solution is that while the machine isoperating, the underside of the veneer sheet will be exposed and rubbedagainst the upper rough surface of the rotating disc, which will be peeland produce fine wood dust. This fine wood dust accumulates and attachesto many other parts of the machine so it takes effort to clean,especially fine wood dust that easily falls into the glue container todamage the glue. In addition, fine wood dust also scratches seams of theveneer sheets, especially when the thickness of the veneer sheet ishigh, the friction between the veneer sheets with the surface of thedisc will be higher. Moreover, due to the pair of rolling wheels arecohesive together, so that in case two veneer sheets have uneventhickness, it will lose the squeezing effect in thinner veneer sheets.

SUMMARY OF THE INVENTION

The invention proposes an embryo loading device used for the veneerhorizontal jointing machine (hereinafter referred to as the machine)with the function of receiving and rolling two veneer sheets into themachine at the same time, simultaneously joining two glued sides of eachother. Two veneer sheets are always opposite each other, allows themachine always to achieve a stable squeezing effect, a layer of glueapplied on the surface of two veneer sheets is evenly, helping the seamsof two veneers are aligned without extruding, scratching or peeling.

In order to achieve the above-mentioned purpose, the embryo loadingdevice used for veneer horizontal jointing machine according to thisinvention is characterized in that comprising: a clutch gear wheel and arolling wheel part.

According to the first embodiment of the invention, the first differentfactor of the embryo loading device according to the invention is thatthe clutch gear wheel part formed by two shaped box frames, a pair ofclutch gear wheels, two drive shafts and gears.

Two shaped box frames are installed side by side and opposite each otheron both sides of the guide bar, under a sliding table of the machine andbehind the mount of feeding splint (also as workpiece loading mouth).The upper side of the shaped box frame is arranged a flat slidingsurface mounted on par with the sliding table of the machine on twosides of the guide bar, wherein one shaped box frame on one side of theguide bar can be adjusted higher than the sliding table surface adistance that corresponds to the thickness of the veneer sheet. Themaximum distance is about 5 mm in case of the veneer sheet with athickness from 1.5 to 5 mm and it can not bend when it comes into thegluing stage in the operation process of the machine.

A pair of equally designed clutch gear wheels are rotationally driven bythe same number of revolutions in the direction of rolling the workpieceinto the machine and arranged opposite each other in two shaped boxframes placed side by side on both sides of the guide bar, under thesliding table of the machine and behind the workpiece loading mouth.Each clutch gear wheel is installed in a separate shaped box frame anddriven by gears so that two clutch gear wheels can rotate in the samedirection with the same number of revolutions. The shaft of each clutchgear wheel is inclined, upwards on the small diameter of the clutch atan angle equal to the taper of the clutch wheel, so that the birth pathof the cone is tangent from below and on par to the surface of thesliding table. The taper of the clutch wheel and the inclination of theclutch shaft is ranged from 0.1 to 89.9 degrees.

The two clutch gear wheels are close to the guide bar bulkhead on theboth sides of the guide bar and opposite each other via the largediameter of the cone, on the cone surface of the clutch gear wheel isroughen. At the small conical end of the clutch wheel is a bevel gearthat is rotated by the bevel gear with a vertical shaft, the lower endof this vertical shaft fitted with a transmission gear that is connectedto the gear of the shaped box frame on the other side of the guide barand rotationally driven by the motor.

A further different factor of the embryo loading device according to thefirst embodiment of the invention s that the rolling wheel part isformed by a pair of equal double rolling wheels and arranged on a pairof clutch gear wheels. The horizontal shaft of the pair of doublerolling wheels is perpendicular to the guide bar and are arrangedopposite each other on both sides of the guide bar. A pair offree-rotating double rolling wheels (not driven) can be shrugged up andpressed down with adjustable pressure.

Each of the double rolling wheel with a separate shaft and two thinrolling wheel is characterized in that comprising:

-   -   A main rolling wheel and an auxiliary rolling wheel rotating        separately without adhere each other and are arranged a distance        each from other to make the width of each double rolling wheel        is equivalent to the length of birth path on the cone of each        clutch wheel;    -   A round surface of the main and auxiliary rolling wheel is        smooth or rough with a roughness from small to large to suit the        actual effect;    -   Two main rolling wheels of two double rolling wheels are linked        together via a polycentric coupling, so that they can always        rotate with the same number of revolutions.

The double rolling wheels are made up of a rolling wheel rim which canbe rotated around a fixed shaft by linking each other with two bearings.The surface around the rolling wheel rim has two parts: the largediameter part used to install the main rolling wheel, between the mainrolling wheel and the large diameter surface of a rolling wheel rim ispadded with a rubber ring pad with a function of making the main rollingwheel can be shrugged up and pressed down eccentrically with the shaftwhen operating.

The auxiliary rolling wheel is a circular rim, the outside diameterthereof being equal to the outside diameter of the main rolling wheel,that can freely rotate by linking between a bearing and a surface of theinside small diameter of the rolling wheel rim. Between the auxiliaryrolling wheel and the outer round surface of the bearings of theauxiliary rolling wheel is also padded with a rubber ring pad with thefunction of making the auxiliary rolling wheel can be shrugged up andpressed down eccentrically with the rolling wheel rim when operating.

A double rolling wheel on one side of the guide bar can be adjusted tolift up corresponding to the height of a shaped box frame at the sameside in case of necessity. On the opposite side of two main rollingwheels and between two double rolling wheels is two sliding pins, thatare spaced at a distance so that the center of the main rolling wheelbecomes the midpoint of straight segment between two sliding pins.

Between the two main rolling wheels is arranged a coin shapedpolycentric coupling, on the surface of the coin of the polycentriccoupling there are four sliding grooves arranged evenly and faced intothe center, the width of the sliding groove fits snugly with the slidingpin on the side face of each main rolling wheel and the length of thesliding groove meets the stroke back and forward, enough that when thiscoupling mechanism operates, it will has the function of making the twomain rolling wheels always rotate with the same number of revolutions,even if eccentrically each other with the deviation corresponding to themaximum thickness of the veneer sheets.

When the machine operates, two veneer sheets are loaded on either sideof the feeding splint on either side of the guide bar and are blocked bytwo embryo positioning cylinders, two veneer sheets are pressed downfrom above by a pair of clutch gear wheels arranged under the surface ofthe sliding table and two double rolling wheels, at the same time twoheads of the embryo positioning cylinder leave away from the surface ofthe sliding table when receiving a signal from the photoelectric sensorreceiving workpiece (sensor), that to make two veneer sheets to berolled and put into the machine, and at the same time pressed the twosides of the two veneer sheets together by the pact of the conicalsurface of the two clutch gear wheels to make the two veneer sheets bothmove into the machine in the direction of the guide bar and horizontaldrift toward the big conical head (the ratio of taper degrees as higherthe level of horizontal drift toward the big, conical head as more)until the sides of two veneer sheets pressed dose to both sides of theguide bar bulkhead of the guide bar and moving into the machine.

Two main rolling wheels of the two double rolling wheels are pressedclose to both sides of the guide bar bulkhead, the upper sidecorresponds to the conical surface at the big end of the two clutch gearwheels bottom, that always rotate with the same number of revolutions tocreate the press down effect to make the clutch gear wheel effective, atthe same time to keep the two veneer sheets moving at the same speed,even in case of the veneer sheets with a large thickness that can not bebent when moving through the glue applicator.

The two auxiliary rolling wheels is outside the two double rollingwheels, on both sides of the guide bar corresponding to the conicalsurface at the small end of the two clutch gear wheels below, that isable to shrug up and press down along the same shaft with the mainrolling wheel of the double rolling wheels, at the same time is alsoable to shrug up and press down independently to create a continuousdownward pressure effect to make the clutch gear wheel below effective,even in case the surface and thickness of the veneer sheet are notequal.

One more further proposed subject of the invention is that two doublerolling wheels of the rolling wheel part of the embryo loading deviceaccording to the invention are replaced by two clutch rolling wheels.

The distinctive factor of the embryo loading device part according tothe second embodiment of the invention whereby the two clutched rollersare replaced for the two rolling wheels in the first embodiment, thatare designed to be opposite each other, having the same shape as the twoclutched wheels in the first embodiment, but the taper and the shafttilt can be equal to or less than or bigger more than the taper of theclutch in the below clutch gear wheel part, the thickness and thediameter of the clutch wheel can be equal or smaller or bigger more thanthe clutch in the below clutch gear wheel part. The horizontal shaft istilted toward the small conical end with an inclination equal to thetaper. The conical surface of the clutch roller can be smooth or roughwith a roughness from small to large so that the effect is consistentwith the reality. Two clutch rollers can rotary round freely no drivenand no polycentric coupling, wherein a clutch roller can be lifted highwhen operating in the case of veneer sheet with a large thickness.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1a —is a perspective drawing showing the embryo loading device usedfor the veneer horizontal jointing machine according to the knowntechnical solution with a rolling shaft and a horizontal roller aredeviate from each other and FIG. 1b —is a perspective drawing showingthe rolling mechanism arranged on the surface of the rotating disk thatis used for the veneer horizontal jointing machine according to theknown technical solution.

FIG. 2a —is a drawing showing a vertical projection on the left and FIG.2b —is a drawing showing the vertical projection in front of the veneerhorizontal jointing machine using the embryo loading device according tothe invention.

FIG. 3—is a perspective drawing showing the detailed composition of theembryo loading device according to the invention with the guide bar.

FIG. 4—is a perspective thawing showing the detailed composition of theembryo loading device according to the invention with the guide bar butwithout the sides and the upper side of two shaped box frames.

FIG. 5—is a drawing showing a vertical projection in front of the embryoloading device according to the invention.

FIG. 6a —is a drawing showing a structure cross section of two doublerolling wheels and a polycentric coupling and FIG. 6b —is a perspectivedrawing showing the detailed composition of the two double rollingwheels and a polycentric coupling in the embryo loading device accordingto the invention.

FIG. 7—is a drawing showing a vertical projection on the left of theembryo loading device according to the invention that is linked withother parts in the veneer horizontal jointing machine.

FIG. 8a —is a drawing showing a projection above two shaped box frameswith the clutch gear wheel arranged under the guide bar and FIG. 8b —isa drawing showing a vertical cross section on the left shaped box framebelow the guide bar together with the other parts of the embryo loadingdevice according to the invention.

FIG. 9a —is a perspective drawing of the guide bar in the embryo loadingdevice according to the invention used for thin veneer sheet and FIG. 9b—is a perspective drawing of the guide bar in the embryo loading deviceaccording to the invention used for thick veneer sheet.

FIG. 10—is a drawing showing the vertical projection in front of theembryo loading device according to the invention when the right shapedbox frame with the clutch gear wheel and the double rolling wheel islifted.

FIG. 11a —is a perspective drawing showing the movement of thepolycentric coupling when two double rolling wheels are concentricallyoperated together and FIG. 11b —is a perspective drawing showing themovement of the polycentric coupling when two double rolling wheels areeccentrically operated together in the embryo loading device accordingto the invention.

FIG. 12—is a perspective drawing showing the embryo loading deviceaccording to a second embodiment of the invention, wherein the twodouble roiling wheels are replaced by the two clutched rollers.

FIG. 13—is a drawing showing the projection in front of the embryoloading device according to a second embodiment of the invention,wherein the two double rolling wheels are replaced by the two clutchedrollers with related parts, the right clutch gear wheel and clutchedroller are lifted.

FIG. 14—is a drawing showing the projection in front of the embryoloading device according to a second embodiment of the invention,wherein the two double rolling wheels are replaced by the two clutchedrollers with related parts such as: sliding rails, drives sliding rails,compression cylinder and lifting cylinder.

FIG. 15—is a perspective drawing showing the embryo loading deviceaccording to the invention with the guide bar which is loading two thinveneer sheets.

FIG. 16—is a perspective drawing showing the embryo loading deviceaccording to the invention that is loading, two thick veneer sheets withthe guide bar but without the feeding splint, the glue splint.

FIG. 17—is a perspective drawing showing the embryo loading deviceaccording to a second embodiment of the invention using two clutchedrollers instead of two double rolling wheels that is loading two thinveneer sheets.

FIG. 18—is a perspective drawing showing the embryo loading deviceaccording to a second embodiment of the invention using two clutchedrollers instead of two double rolling wheels that is loading two thickveneer sheets.

LIST OF REFERENCE NUMBERS IN THE PICTURES

1 Machine body

2 Sliding table: 2.1 Guide bar; 2.1.1 Guide bar bulkhead; 2.1.2 Feedingsplint; 2.1.3 Glue splint; 2.1.4 Pads; 2.1.5 Cover piece; 2.2 Glueapplicator; 2.3.8T lower left wheel

3 Clutch gear wheel part: 3T Left shaped box frame; 3P Right shaped boxframe; 3.1 Clutch wheels; 3.1.1 Clutch gear; 3.1.2 Clutch gear shaft;3.2 Drive shaft; 3.2.1 Clutch gear; 3.2.2 Gears; 3.3 Pinion

4 Rolling wheel part: 4K Double rolling wheels; 4.1 Rolling wheel rim;4.1.1 Rolling wheel shaft; 4.1.1C Clutch roller shaft; 4.1.2 Slidingpin; 4.1.3 Bearing; 4.1C Clutched roller; 4.2 Main rolling wheel; 4.2.1Main rolling o'ring gaskets; 4.3 Auxiliary rolling wheel; 4.3.1Auxiliary rolling wheel o'ring gaskets; 4.4 Polycentric coupling; 4.5Sliding rails; 4.5.1 Drives sliding rails; 4.5C The back of slidingrails; 4.5.1C Sliding bearing

5 Upper Hinge chain part: 5.1 Upper tension frame; 5.1.1 Horizontalplatform; 5.1.2 Pads; 5.2 Upper horizontal sprocket; 5.3T Left rollingwheel; 5.3P Right rolling wheel 5.3P; 5.4 Middle horizontal roller; 5.5Pair of end horizontal rollers

6 Under hinge chain parts: 6.1 Under tension frame; 6.2 Horizontalwheel; 6.3 Horizontal wheel

7 Vertical screw; 7.1 Vertical pillar

X1 Embryo positioning cylinder; X2 Positioning cylinder; X3 Compressioncylinder; X4 Lifting cylinder

S1 photoelectric sensor receiving workpiece

DETAILED DESCRIPTION

Detailed structure of the embryo loading device used for the veneerhorizontal jointing machine according to the first embodiment of theinvention are described in detail together with the drawings FIGS. 2-14.

According to FIGS. 2a -2 b, the veneer horizontal jointing machine(hereinafter referred to as the machine) using the embryo loading deviceaccording to the invention has a structure including a machine body 1, asliding table 2, a clutch gear wheel part 3 and a rolling wheel part 4.

The machine body 1 has an inverted C-shape with the inlet part to becompatible with the standard width size of the finished veneer boards.The 2 wide sliding table is arranged below the underside of the invertedC of the machine body.

The embryo loading device according to the invention is made up of theclutch gear wheel part 3 and the rolling wheel section 4.

The clutch gear wheel part 3 is located at the under part of theinverted C-shape of machine body 1 that is on par with the surface ofthe sliding table 2, the rolling wheel part 4 is located at the upperpart of the inverted C-shape of the machine body 1, the guide bar 2.1 isarranged between of the two clutch gear wheels 3.1 having the guide barbulkhead 2.1.1, so that two veneer sheets can be loaded at the same timeand two opposite sides thereof are glued together, sliding at both sidesof the guide bar bulkhead 2.1.1. The rolling wheel part 4 is arrangedabove the clutch gear wheel part 3.

According to FIGS. 3-5, the clutch gear wheel part 3 of the embryoloading device according to the invention is arranged below both sidesof the guide bar 2.1, so that two sides of the sliding table 2 are onpar with the upper surface of the sliding table 2 of the machine.

The left shaped box frame 3T and the right shaped box frame 3P areplaced opposite and close each other, the plane above two box frames ismounted on par with the surface of the sliding table 2 of the machineand on two sides of the guide bar 2.1. The ceiling side of each shapedbox frame has an empty space for being fitted snugly and be on par withthe part of the protruding wing of the guide bar 2.1. The facade insideof the two walls dose each other of the left shaped box frame 3T and theright shaped box frame 3P are designed beveled from the bottom up, ininclined direction out side an angle of about 10 degrees and two leaningwall opposite sides inside of two box frames has a hole tear fitting theclutch wheel 3.1.

A pair of the clutch gear wheels 3.1 comprises two equal clutch wheelswith degree of a clutch about 10 degrees are designed to be oppositeeach other, one clutch wheel is arranged inside the right shaped boxframe 3P and another clutch wheel is arranged inside the left shaped boxframe 3T, that are close with both sides of the guide bar bulkhead 2.1.1of the guide bar 2.1. The conical surface of the clutch wheel isroughened, each of the small conical ends of each clutch wheel is theclutch gear 3.1.1, that is rotated round the clutch gear shaft 3.1.2 bylinking with two bearings in the middle part of the shaft. One end ofthe clutch gear shaft 3.1.2 is fixed perpendicular to the verticalsurface inclined at an angle of about 10 degrees inside of the shapedbox frame vertical wall, so that the clutch gear shaft 3.1.2 ishorizontal perpendicular to the guide bar 2.1 and inclined down thelarge end of the cone at an angle of about 10 degrees, allows the birthpath on the conical surface where the tangent to the slip surface on thebox frame is always on par with the slip surface. (FIGS. 4-5)

Two identical drive shafts 3.2 are arranged vertically and opposite eachother, one drive shaft is arranged in the left shaped box frame 3T andthe other one is arranged in the right shaped box frame 3P. On top ofeach drive shaft 3.2 is fitted with a clutch gear 3.2.1. The clutch gear3.2.1 has the number of teeth that match the number of the teeth of theclutch gear 3.1.1 is arranged at the head of the clutch wheel 3.1 totransmit through the shaft of the clutch gear shaft 3.1.2 with an angleof about 80 degrees. The part between the two drive shafts 3.2 isarranged the gears 3.2.2 that match the gear and has the same number ofteeth of each drive shaft 3.2 is arranged in the shaped box frame on theother side of the guide bar. The lower part of the two drive shafts 3.2is fitted with two bearings mounted in two ball-bearings (not shown inthe FIG.), each ball-hearing is fastened to the floor surface of eachbox frame where there is a hole matches the ball-bearing.

The pinion 3.3 is fitted with motor M1 to drive the gears 3.2.2 of thedrive shaft 3.2 that is arranged in the left shaped box frame 3T andthen forward through the gears 3.22 of the drive shaft 3.2 that isarranged in the right shaped box frame 3P so that the clutch gear 3.1.1with the same number of revolutions, but in opposite direction and thesame transmission through the clutch gear 3.1.1 to make the two clutchwheels 3.1 opposite each other have the same number of revolutions andis rotated in the same direction (FIG. 5).

Motor M1 is a deceleration motor that is fastened to the underside ofthe left shaped box frame 3T, the pinion 3.3 is connected to the motorshaft of the motor M1 via a device similar to a bike tweezer (not shownin the FIG.) that has rotary drive function.

The rolling wheel part 4 of the embryo loading device according, to thefirst embodiment of the invention is formed by a pair of two dualrolling wheels 4K that comprises a rolling wheel rim 4.1 having aseparate shaft with two thin rolling wheels, a main rolling wheel 4.2,an auxiliary rolling wheel 4.3, to polycentric coupling 4.4 and asliding bar 4.5.

A pair of two dual rolling wheels 4K equal are arranged upper the pairof the clutched wheels 3.1, a horizontal shaft of the double rollingwheels 4K is perpendicular to the guide bar 2.1 and opposite to the twosides of the guide bar bulkhead 2.1.1. The pair of two double rollingwheels 4K rotating freely without the transmission can be shrugged upand pressed down with adjustable pressure. Each double rolling wheels 4Khas a separate shaft that is made up of a rolling wheel rim 4.1 that canrotate round the rolling wheel shafts 4.1.1 by linking between twobearings. The rolling wheel shafts 4.1.1 are fitted on the insidesurface of the lower body of the sliding bar 4.5.

The round surface around the rolling wheel rim 4.1 has two parts: thelarge diameter part of the rolling wheel rim is used to install the mainrolling wheel 4.2, between the main rolling wheel and the surface of thelarge diameter of rolling wheel rim 4.1 fitted a main rolling O-ringgaskets 4.2.1 in rubber.

The main rolling O-ring gaskets (O-ring) 4 are fitted into the groove onthe surface of the large diameter part of the rolling wheel rim 4.1having the function makes the main rolling wheel 4.2 to be shrugged upand pressed down eccentrically with the shaft of the rolling wheel whenit is operating, the outer edge of the large diameter part there is ablocking rim that keeps the main rolling wheel 4.2 to be not skewedoutwards (FIG. 5).

An auxiliary rolling wheel 4.3 is a circular rim with the outsidediameter as the same as the outside diameter part of the main rollingwheel 4.2 and can be freely rotated by linking the bearing with thesurface of the small diameter part of the rolling wheel rim 4.1. Betweenthe round surface inside the auxiliary rolling wheel 4.3 and outer roundsurface of the bearing of the auxiliary rolling wheel 4.3 padded anauxiliary rolling wheel O-ring gaskets 4.3.1 in rubber.

The auxiliary rolling wheel o'ring gaskets (O-ring) 4.3.1 is fitted intothe groove on the inside surface of the auxiliary rolling wheel 4.3having the function to make the auxiliary rolling wheel 4.3 to beshrugged up and pressed down eccentrically with the rolling wheel rim4.1 when it is operating. On the side surface of the large diameter ofthe rolling wheel rim 4.1 has two sliding pin 4.1.2 are set apart onefrom other a empty space so that a center of the main rolling wheel rimbecomes the midpoint of a straight line between the two sliding pins.

The main rolling wheel 4.2 and the auxiliary rolling wheel 4.3 have theoutside diameter as the same, the round surface of main rolling wheel4.2 and the auxiliary rolling wheel 4.3 are made smoothly or rough withsmall to large roughness, in accordance with the actual effect. The mumrolling wheel and the auxiliary rolling wheel are rotated separately,without adhere each other and spaced a distance to create the width fromthe main rolling wheel 4.2 to auxiliary wheel. 4.3 a distancecorresponding to the length of birth path on each clutch cone 3.1.

The polycentric coupling 4.4 is arranged between two main rolling wheels4.2 and close each other. The polycentric coupling 4.4 has a coin shape,on the face of the polycentric coupling 4.4 there are four slidinggrooves that are arranged evenly and all are facing to the center. Thewidth of the sliding groove is fitted snugly with the sliding pin on theside face of each rolling wheel rim 4.1 and the length of the slidinggroove meet the forward and backward movement, to enough so that whenthe polycentric coupling 4.4 in working two main rolling wheels 4.2 oftwo dual rolling wheels 4K are always in motion at the same time andhave the same number of revolutions, even when they are eccentric (maxabout 5 mm).

Two sliding rails are installed into two drive sliding rails 4.5.1, theupper body of each sliding rails 4.5 is fixed to the head of acompression cylinder X3, with the function to make two dual rollingwheels 4K to be pressed down the upper face of the veneer sheets withadjustable pressure.

According to FIGS. 6a -6 b, the polycentric coupling 4.4 is arrangedbetween too dual rolling, wheels 4K. A pair of two dual rolling wheels4.4 that comprises the parts assembled in the following order: outerring—auxiliary rolling wheel 4.3—bearings—inner ring—main rolling wheels4.2—rolling wheel shaft 4.1.1—auxiliary rolling wheel o'ring gaskets4.3.1—main rolling o'ring gaskets 4.2.1—rolling wheel rim 4.1 shaft sealring—polycentric coupling 4.4 and sliding pin 4.1.2.

According to FIG. 1, the clinch gear wheel part 3 of the embryo loadingdevice according to the invention is arranged below two guide bars 2.1,the upper side of the guide bar 2.1 is on par with the upper surface ofthe sliding table 2 of the machine body 1. The rolling wheel part 4 ofthe embryo loading device according to the invention is arranged at theupper the clutch gear wheel part 3 and is attached to the horizontalplatform 5.1.1 at the head of the upper tension frame 5.1 of the hingechain parts above 5. A horizontal shaft rolling wheel on left 5.3T frontand a horizontal shaft rolling wheel on right 5.3P behind are arrangedabove the glue applicator 2.2 of the machine. Below the horizontal shaftrolling wheel on left 5.3T there is left wheel and below the horizontalshaft rolling wheel on right 5.3P there is a right wheel (not shown inthe FIG.).

Opposite via the guide bar 2.1 and the horizontal shaft rolling, heel onright 5.3P is arranged a cover piece 2.1.5 that is bent in the middle inthe shape of a dome, the upper surface of the cover piece 2.1.5 put onpar with and connected to the bottom edge of the slot in the bend andthe two dome edges connected to the surface of the sliding table 2 ofthe machine body 1 of the machine that is used to lift up the veneersheet to curve of the slot, and also to cover the head of the glueapplicator 2.2 that is put along the same side of the guide bar 2.1.Under the surface of sliding table 2 of machine body 1 and the guide bar2.1 and on the glue splint 2.1.3 is arranged a glue storage box (notshown in the FIG.). Two feeding splint 2.1.2 on both sides of the guidebar can be curved into a wide mouth for easy loading of two veneersheets at the same time.

At the end part of the guide bar 2.1 there is a pair of horizontal wheel6.2 arranged under the surface of the sliding table 2. The outer circleof the horizontal wheel 6.2 is tangential to the upper surface of thesliding table 2. On the horizontal wheel 6.2 is arranged a horizontalshaft gear 5.4 that is pressed from top to bottom with adjustablepressure.

The hinge chain part above 5 comprises an upper tension frame 5.1, whichis driven by two upper horizontal sprockets 5.2. The hinge chain partabove 5 can be adjusted forward and down by two vertical screws 7 drivento rotary in the same direction, at the same speed by the chain drive(chain).

The two screw drives of two vertical screws 7 are fastened to the uppertension frame 5.1 of the upper hinge chain parts 5 and each screw drivehas a sliding ball bearing that is linked to a vertical pillar 7.1,which is symmetric and the same with the upper hinge chain parts 5.

The under hinge chain parts 6 has the same structure as the upper hingechain parts 5 and it is arranged symmetrically with the upper hingechain parts 5 and is installed permanently under the sliding table 2 ofthe machine body 1. The upper outer surface of the under hinge chainparts 6 is stretched on par with the surface of the sliding table 2 ofthe machine body 1, the under outer surface of the upper hinge chainparts 5 is stretched and exposed a distance by the thickness of theveneer sheets in comparison with the surface of sliding table 2. Theunder hinged chain parts 6 can be moved by two tinder tension frame 6.1.When viewed from above in the direction of loading the veneer sheet, thetwo lines of the upper and under hinge chains are stretched withoutparallel each other, and between them there will be a small distancethat as deeper will be as narrower, in the middle of this distance thereis arranged the heating device to dry the glue (not shown in the FIG.).

The mechanism of the pair of end horizontal wheel 6.3 and the pair ofend horizontal rollers 5.5 that is at behind of the machine and that hasthe function of bringing the connected veneer board through the slidingtable 2 out from the machine to receive the finished product.

The pair of the clutch gear wheels 2.1, a left wheel, of the leftrolling wheels 5.3T and a right wheel of the right rolling wheels 5.3Pbelow the surface of the sliding table 2 of machine body 1 together withthe middle horizontal wheel pair 6.2 and the end horizontal wheel pair6.3 are rotating driven to move the veneer board across to the surfaceof the sliding table 2 of machine body 1 with a speed of about from 30m/min to 40 m/min as the same as the speed of the upper hinge chainparts 5 and the under hinge chain parts 6.

All of the left rolling wheel 5.3T at front, the right rolling wheel5.3P at behind, the middle horizontal roller 5.4 and the pair of endhorizontal rollers 5.5 are fixed to upper tension frame 5.1 of the upperhinge chain parts 5 so that when the upper hinge chain parts 5 arelifted all the above-mentioned rolling-wheel mechanisms are also liftedtoo.

According to FIG. 8a , too shaped box frames with a clutch gear wheel inthe clutch gear wheel parts 3 of the embryo loading device according tothe first embodiment of the invention are installed below and on eitherside of the guide bar 2.1 on the surface of the sliding table 2. On theouter edge the upper face of the left shaped box frame 3T and the rightshaped box frame 3P there are holes to fix vertical edges outside theshaped box frames by bolts. Also, on the upper side of the right shapedbox frame 3P also has a circular hole used to mount the photoelectricsensor receiving workpiece S1. The inner edge of the surface of the twoshaped box frames has a empty space to fit snugly with the protrudingwings on either side of the guide bar 2.1 and in the middle of each wingthere is a sufficient space to fit the clutch wheel 3.1 of the clutchgear wheel parts 3 of the embryo loading device according to theinvention.

According to FIG. 8b , the clutch gear wheel 3.1 is arranged to protrudeon par with the upper face of the left shaped box frame 3T and is belowthe guide bar 2.1 together with the guide bar bulkhead 2.1.1, thefeeding splint 2.1.2 and the glue splint 2.1.3. The end head of the leftshaped box frame 3T and the right shaped box frame 3P have holes forfitting snugly with the cylinder head of the positioning air cylinder X2so that the cylinder head can protrude up and down off the upper face ofthe shaped box frame and two bodies of this cylinder are fitted on theunder face of two shaped box frames 3T and 3P. A reducer motor M1 isfitted to the under face of the left shaped box frame 3T and isconnected to the gear 3.3 via the motor shaft.

According to FIG. 9a , the guide bar 2.1 used for loading the thinveneer embryo comprises the guide bar bulkhead 2.1.1, on both sides ofmiddle part of the guide bar bulkhead is clamped by two feeding splint2.1.2, and the glue splint 2.1.3 is attached to the end of the guide barbulkhead 2.1.1. The under left side in front of the glue splint 2.1.3 iscut into a round sphere and the vertical edge of the guide bar 2.1 justbelow the left gap of the round sphere at the mouth of the glue splint2.1.3 is cut into forming a horizontal spherical shape, the lower rightside behind the glue splint 2.1.3 is also cut into a spherical sphereand the vertical edge of the guide bar 2.1 just below the right gap ofthe round sphere at the mouth of the glue splint 2.1.3 is also gut intoa horizontal spherical shape.

All the underside of the feeding splint 2.1.2 and the glue splint 2.1.3are combined with the vertical faces of two sides of the guide bar 2.1.1and the upper face on both sides of the guide bar 2.1 are formed twoguide slots on both sides of the guide bar 2.1 with a height of guideslots enough so that the thin edge of the veneer sheet slides in theguide slot easily, the bottom side of each guide slot where bent aspherical shape is fitted a cover piece 2.1.5 that is above the glueapplicator 2.2 and is fitted snugly into the horizontal gap of thespherical shape can the sides of the guide bar with the right front andthe left behind according to the guide bar 2.1, each cover pierce 2.1.5is bent to be a bottom of the guide slot with the circular sphere sothat the two ends of the circular sphere of the cover pierce 2.1.5 areconnected to the surface of the sliding table 2. Two wings on the sidesof the guide bar 2.1 have two gaps equal each other to fit the clutchwheel 3.1 that is mounted to the upper horizontal surface of two shafts(FIG. 7).

FIG. 9b is showing a perspective view of the guide bar 2.1 used forthick veneer sheets that comprises only the guide bar bulkhead 2.1.1,without two feeding splints 2.1.2 on either side of the middle part ofthe bulkhead and also without the glue splint 2.1.3 at the end of theguide bar bulkhead 2.1.1. The vertical side on the right side of theguide bar 2.1 is carved into a horizontal sphere, the left wing of theguide bar 2.1 is carved out to fit the clutch gear lion the left

According to FIG. 10, when the veneer embryo has a thickness of 1.2 mmto 5 mm, the right clutch wheel 3.1 is lifted to 5 mm thanks to thelifting cylinder X1 in the clutch wheel part 3 that is arranged underthe surface of sliding table 2, at the same time, the dual rolling wheelwith the right rolling shaft 4.1.1 is also lifted to 5 mm thanks to thelifting cylinder X4 in the rolling wheel part 4 that is arranged on thesurface of sliding table 2 so that the veneer sheet on the right to behigher than the veneer sheet on the left about 5 mm when they are loadedinto the machine.

According to FIGS. 12-13, the embryo loading device used for the veneersplicing machine according to the second embodiment of the invention,wherein two clutched rollers 4.1C are replaced for the two dual rollingwheels 4K according to the first embodiment of the invention,

These two clutched rollers 4.1C are arranged opposite each other anddesigned like to the form with the two clutched rollers in the firstembodiment, but the taper and tilt of the shaft thereof may be equal toor less than or bigger than the taper of the clutch wheel in the lowergear section, and the thickness and diameter of the clutch wheel mayalso be equal to or smaller or bigger than the clutch wheel 3.1 in theclutch gear wheel parts 3 below. The inclined direction of the shaft iscoinciding with the inclined direction of the clutch wheel 3.1.

The conical surfaces of the clutched rollers 4.1C are made smooth orrough with a roughness of less or more so that the effect is consistentwith reality. The clutch roller 4.1C is rotated freely, without drivingby the clutch roller shaft 4.1.1C, that is linked via two bearings,which are fastened to the under end of each sliding rail 4.5C with theinclined vertical surface so that the clutched roller 4.1C is alsoinclined to the small conical head about 10 degrees so that the birthpath where the contact with the surface of the veneer board is alwayshorizontal corresponding and symmetrical with the clutch wheel 3.1 inthe clutch gear wheel part 3, which is arranged below the slidingtablet.

Two clutched rolling wheels 4.1C opposed each other via two slidingrails 4.5C are arranged opposite each other and near side by side. Twoclutched rolling wheels 4.1C can slide up and down together on two backfaces of two clutched rolling wheels 4.1C thanks to the two slidingrails 4.5.1C that are fitted horizontal into the vertical side in thesides of two empty spaces on the horizontal platform 5.1.1, the head oneach sliding rail is arranged a horizontal bar with a hole used to fixthe accumulator tip of the compression cylinder X3, while the left sideof the base of the compression cylinder X3 is fixed to the lets of thepad 5.1.2 and the right side of the base of the compression cylinder X3is fixed to the base of the lifting cylinder X4. The head of the liftingcylinder X4 facing down is fitted to the right of the pad 5.1.2, the legof the pad 5.1.2 is fixed on the horizontal platform 5.1.1 while liftingcylinder X4 is controlled up lower to load a veneer sheet during themachine operating.

According to FIG. 14, the embryo loading device according to the secondembodiment of the invention, wherein a head of the lifting cylinder X4facing upwards is fitted to the right of the pad 5.1.2, the leg of thepad 5.1.2 is fixed on the horizontal platform 5.1.1 while the liftingcylinder X4 is lifted up high so that the right clutched rollers 4.1Ccan also be lifted up high about 5 mm and the right clutched wheel 3.1in the right box frame 3P with the other related parts in the clutchgear wheel parts 3 are also lifted up high 5 mm to operate when loadingthick veneer board.

BEST MODE FOR CARRYING OUT THE INVENTION

According to FIGS. 15-18, when the machine is operated with loading andwithout loading, the rolling wheel part 4 of the embryo loading deviceaccording to the invention is lifted up by two compression cylinders X3.

Other parts such as: the upper hinge chain parts 5 with the left wheel5.3T and the right rolling wheel 5.3P, the pair of rolling wheels 5.4and the pair of rolling wheels 5.5 are lowered by two vertical screws 7far from the surface of the sliding table 2 a distance that is smallerthan the thickness of the veneer sheet.

The parts under the surface of sliding table 2 include: a pair ofclutched wheels 3.1, two wheels (not shown in FIGS.), a pair of middlehorizontal sprockets 6.2, two crawlers 6.2 together with a chain in theunder hinge chain parts 6, two crawlers 5.1 together with the chain inthe upper hinge chain parts 5 and a pair of end horizontal sprockets 6.3are moved its circular motion to the direction of the rolling veneersheet into the machine following the direction of the guide bar 2.1.

Two veneer sheets are loaded at the same time into the feeding splint atthe head of guide bar 2.1 until the leading edge of the two veneersheets is blocked by two heads of the embryo positioning cylinder X1,the same time the photoelectric sensor receiving workpiece S1 transmitsa signal so that in a second later (the time is predetermined) two headsof the embryo positioning cylinder X1 leave the upper surface of theleft shaped box frame 3T and right shaped box frame 3P down on par withthe face of the sliding table 2, simultaneously the two double rollingwheels 4K of the rolling wheel part 4 is pressed down the upper face ofthe two veneer sheets by two workpiece compression cylinders X3 with theappropriate adjusted pressure. When the underside of the veneer sheetcontacted with the two clutched wheel 3.1 are rotating to the directionof rolling into the machine to make two veneer sheets at the same timemoving into the machine to the direction of the guide bar 2.1 andhorizontal drifting toward the big head of each clutch wheel 3.1 untilthe sides of the two veneer sheets are pressed close to the sides of theguide bar bulkhead 2.1.1, at the same time moving into the machine.

Two main rolling wheels 4.2 of two double rolling wheels 4K close toboth sides of the upper guide bar bulkhead 2.1.1, the upper sidecorresponds to the conical surface at the big end of the two clutch gearwheels 3.1 below, that always rotate with the same number of revolutionsto create a press down effect to make the clutch gear wheel effectiveand at the same time also to keep the two veneer sheets always moving atthe same speed.

The two auxiliary rolling wheels 4.3 of the two double rolling wheels 4Kcorresponds to the conical surface at the small end of the two clutchgear wheels 3.1 that presses down to create a circumference differenceeffect between the small end and the big end of the clutch gear wheel3.1, in addition to the ability to shrug up and press down together withthe rolling wheel shafts 4.1.1 arranged on each side of the dual rollingwheels 4K due to moving of the compression cylinder X3 via the slidingrail 4.5, the main rolling wheel 4.2 and the auxiliary wheel 4.3 thatcan shrug up and down slightly off eccentricity to the rolling wheelshafts 4.1.1 thanks to two main rolling o'ring gaskets 4.2.1 andauxiliary rolling wheel O-ring gaskets 4.2.1. and 4.3.1 in rubber tostabilize the interaction efficiency of the main rolling wheel 4.2 withauxiliary rolling wheel 4.3 even though the thickness and smoothness ofuneven veneer sheets.

After passing through out the embryo loading device according to theinvention, the veneer workpieces continues to move through the glueapplicator 2.2, the left edge face of the veneer sheet is glued by theglue roller (not shown in the FIG.) on the right of the guide bar 2.1when the edge of this veneer sheet is kept by the lower left wheel2.3.8T and the left rolling 5.3T with horizontal glue roller on theright of the guide bar 2.1 while the edge of the veneer sheet is bentaccording to section of the spherical guide slot above the right glueroller, followed by the right side of the veneer edge is glued by theglue roller (not shown in the FIG.) to the left of the guide bar 2.1when the edge of the veneer sheet is kept by the lower right wheel2.3.8P on the right below and the right wheel 5.3P on the horizontalside with the glue roller on the left of the guide bar 2.1, while at theedge of the left veneer sheet is curved in a circular spherical slotabove the left glue rolling shaft.

After passing through out the glue applicator, thanks to a pair of themiddle horizontal sprockets 6.2 below and a pair of the middlehorizontal roller 5.4 above, the veneer sheet is moved through out theheating device (not shown in the FIG.) arranged between the two doublehinged chains of the upper hinge chain parts 5 and the under hinge chainparts 6 for drying glue. After being heated to dry the glue, the twoveneer sheets are stuck together into a large veneer board and isbrought out by the end horizontal wheel below 6.3 and a pair of endhorizontal rollers 5.5 and rolled out.

When the edge of the large veneer board passes out the embryo loadingdevice, the photoelectric sensor receiving workpiece S1 transmit thesignal to open up the double rolling wheels 4K in the rolling wheel part4, at the same time two heads of embryo positioning cylinder 1.protruded up from the suffice of the left shaped box frame 3T and theright shaped box frame 3P to load a next veneer workpieces. The machinecan connect horizontal the veneer sheet one with another until the widthof the two finished veneer boards are on par to the indentation of theC-shape of the machine.

The embryo loading device in accordance with the second embodiment ofthe invention, whereby the two clutched rollers 4.1C are replaced forthe double rolling wheel 4K in the rolling wheel part 4. When themachine operated, the clutched rollers 4.1C is press down on the surfaceof the veneer sheet to ensure that the effect of the clutched wheel 3.1is promoted as mentioned above, that is rolled while also is presseddown on the surface of the moving veneer sheet so that also to createthe effect for the veneer sheet drifting horizontal toward the bigconical head of the clutched wheels 4.1C that makes the sides of theveneer sheet always be leaned against each other and be slid on bothsides of the guide bar 2.1 as the same effect of the clutched wheel 3.1.The difference from the operation of the machine in accordance with thefirst embodiment of the invention is that the two clutched rollers 4.1Care not connected to each other to move with the same number ofrevolutions with the double rolling wheels 4K, that is connected eachother via the polycentric coupling 4.4.

The use of the embryo loading device for a veneer horizontal jointingmachine according to the invention has the beneficial effects asfollows:

-   -   Allows the machine to load the workpiece at the same time also        to put two veneer sheets in the same direction at the same        speed, in order to achieve high efficiency when pressing the two        veneer sheets faced each other and leaned on the sides of the        guide bar before the two veneer sheets, continue to go through        the other parts of the machine.    -   Allow the seams of the veneer sheets to be aligned without        extruding and the machine always operates stably.    -   With a stable pressure effect when sliding on both sides of the        guide bar, allowing the glued side of the veneer sheet, when        passing through the glue applicator is always contacted stably        with the round surface of the glue splint so that the glue on        the edge of the veneer sheet has equal thickness, without thick        or thin segment.    -   The contacting part of the upper and lower surface of the veneer        sheets with the rolling wheels and the rollers is very few, and        the sliding friction between the rollers and the lower surface        of the veneer sheet is very low, so that the veneer sheet has no        scratches and chipped peels.

What is claimed is:
 1. An embryo loading device used for the veneerhorizontal jointing machine with the function of receiving and rollingtwo veneer sheets into the machine at the same time, simultaneouslyjoining two glued sides of each other, characterized in that comprising:clutch gear wheel part (3) and rolling wheel part (4), wherein: theclutch gear wheel part (3) comprises the following details: left shapedbox frame (3T) and right shaped box frame (3P) are installed oppositeand close each other on both sides of two guide bar (2.1), below asliding table (2) of the machine and behind a feeding splint (2.1.2);the top of the shaped box frame is a flat sliding surface mounted on parwith the sliding table (2) of the machine on either side oldie guide bar(2.1); the interior vertical sides of the two side bottoms of the tellshaped box frame (3T) and the right shaped box frame (3P) are designedbeveled from the bottom up, in inclined direction outside an angle ofabout 10 degrees and the two leaning wall opposite sides inside of twoshaped box frames has a hole for fitting the clutch wheel (3.1); a pairof clutch wheels (3.1) with equal angle of 10° degrees are designedopposite each other, wherein one device shaft is arranged in the rightshaped box frame (3P) and one device shaft is arranged in the leftshaped box frame (3T), adjacent to the sides of a guide bar bulkhead(2.1.1) of the guide bar (2.1); the shaft of each horizontal clutchwheel is oblique upward on the small diameter of the cone at an angleequal to the taper of the clutch gear wheel so that the angle of thebirth path of the cone is tangentially from below and on par with thesurface of the sliding table (2), two clutch gear wheels are arrangedclose to the guide bar bulkhead (2.1.1) and opposite the large diameterof the cone the conical surface is roughened; each small end of eachclutch gear wheel is fitted a clutch gear (3.1.1), that is transmittedto be rotated round a clutch gear shaft (3.1.2) by linking with twobearings in the middle part of the shaft, one head of clutch gear shaft(3.1,2) is fixed perpendicular to the vertical surface inclined at anangle of about 10 degrees inside of the shaped box frame so that theclutch gear shaft (3.1.2) is horizontal to the guide bar (2.1) and tilttoward the large end of the cone at an angle of about 10 degrees so thatthe birth path on the conical surface where the tangent to the slipsurface on the shaped box frame is always on par with the sliding table;two identical drive shafts (3.2) arranged vertically and opposite eachother one drive shaft in the left shaped box frame (3T) and the othershall in the right shaped box frame (3P); on top of each drive shaft(3.2) there is a clutch gear (3.2.1) fitted with the number of teeththat match the number of clutch gear (3.1.1) arranged at the tip of theclutch wheel (3.1) for transmission through the shaft of the clutch gearshaft (3.1.2) with an angle of 80 degrees; the part between the twodrive shafts (3.2) there are gears (3.2.2) that matches the gear withthe same teeth number of each drive shall (3.2) arranged in a shaped boxframe on the other side of the guide bar (2.1); the lower part of thetwo drive shafts (3.2) are fitted two bearings mounted in twoball-bearings, each ball-bearing is fastened to the floor surface ofeach shaped box frame where is a hole matches round with ball-bearing;pinion (3.3) fined with a motor (M1) to drive the gears (3.2.2) of thedrive shaft (3.2) arranged in the left shaped box frame (3T) and forwardthrough the gears (3.2.2) of the drive shaft (3.2) arranged in the rightshaped box frame (3P) so that the clutch gear (3.1.1) with the samenumber of revolutions, but in opposite direction and the sametransmission through the clutch gear (3.1.1) to male two clutch wheels(3.1) opposite each other have the same number of revolutions and isrotated in the same direction; the rolling wheel part (4) according tothe first embodiment comprises the following details: a pair of two dualrolling wheels (4K) equal having a horizontal shaft perpendicular to theguide bar (2.1) and opposite to two sides of the guide bar, rotatingfreely without the transmission can shrug up and press down withadjustable pressure; each of the dual rolling wheel (4K) has a separateshaft, that can rotate round rolling wheel shafts (4.1.1) by connectionbetween two bearings; each double rolled wheel (4K) comprises a rollingwheel rim (4.1), a main rolling wheel (4.2), an auxiliary rolling wheel(4.3), a polycentric coupling (4.4) and a sliding rail (4.5); the mainrolling wheel (4.2) is a round wheel fitted on the round surface aroundthe rolling wheel rim (4.1) on the large diameter part of this roilingwheel rim, between the ma rolling wheel and the surface of a largediameter part of the rolling wheel rim (4.1) there is a main rollingo'ring gaskets (4.2.1) in rubber; the auxiliary rolling wheel (4.3) is around wheel with an outside diameter equal to the outside diameter ofthe main rolling wheel (4.2) and that can freely rotate round by linkinga bearing with the surface of a small diameter part of the rolling wheelrim (4.1), between the round surface inside the auxiliary rolling wheel(4.3) and the outer round surface of the bearing of the auxiliaryrolling wheel is padded with auxiliary rolling wheel o'ring gaskets(4.3.1) in rubber; a polycentric coupling (4.4) arranged between the twomain rolling wheels (4.2) and close each other, shaped like a coin, onthe face of the coin there are four sliding grooves evenly arranged andall are facing to the center; and two sliding rails (4.5) installed totwo drive sliding rails (4.5.1), the upper body of each of the slidingrails (4.5) is fixed to the head of a compression cylinder (X3), withthe function to make the two dual rolling wheels (4K) to be press downthe upper face of the veneer embryo with adjustable pressure.
 2. Theembryo loading device used for the veneer horizontal jointing machineaccording to claim 1, characterized in that, the clutch gear wheel part(3) is designed to be located at the under part of an inverted C-shapeof machine body (1), and below the both sides of the guide bar (2.1) areon par with the surface of the sliding table (2) of the machine, whilethe rolling wheel part (4) is arranged in the upper part of the invertedC-shape of the machine body (1)) and above the clutch gear wheel part(3).
 3. The embryo loading device used for the veneer horizontaljointing machine according to claim 1, is characterized in that twoshaped box frames are installed opposite and close each other on thesides of the guide bar (2.1), below the surface of the sliding table (2)of the machine and behind the feeding splint (2.1.2), the upper surfaceof the shaped box frame is a flat sliding surface mounted on par withthe surface of the sliding table (2) of the machine on both sides of theguide bar, wherein a shaped box frame on one side of the guide bar canbe lifted higher than the surface of the sliding tables for the cases ifthe veneer sheets with large thickness.
 4. The embryo loading deviceused for the veneer horizontal jointing machine according to claim 1,characterized in that a taper of the clutch wheel (3.1) and theinclination of the clutch shaft (3.1.1) range from 0.1 to 89.9 degrees.5. The embryo loading device used for the veneer horizontal jointingmachine according to claim 1, characterized in that the conical surfaceof the main rolling wheel (4.2) and the auxiliary rolling wheel (4.3)can be smooth or rough with a roughness from small to large so that theeffect is consistent with the reality; the main rolling wheels (4.2) andthe auxiliary rolling wheel (4.3) can rotary separately, without adhereeach other and spaced a distance to create a width from the main rollingwheel (4.2) to the auxiliary wheel (4.3) a distance corresponding to thelength of birth path on each clutch cone (3.1).
 6. The embryo loadingdevice used for the veneer horizontal jointing machine according toclaim 1, characterized in that each double rolling wheel has the lengthequivalent with a length of birth path on the cone of each clutch wheel,the two main rolling wheel of two double rolling wheels always rotaryround with the same number of revolutions by linking each other via thepolycentric coupling (4.4).
 7. The embryo loading device used for theveneer horizontal jointing machine according to claim 1, characterizedin that the width of each sliding groove on the surface of thepolycentric coupling (4.4) that fits snugly with the sliding pin on theside face of each of the main rolling wheel (4.2), while the length ofthe sliding groove suitable the forward and backward stroke sufficientlyso that when the polycentric coupling is operated, the two main rollingwheels (4.2) of the double rolling wheel (4K) always rotary with thesame number of revolutions even when eccentric with an eccentricity issufficient support one side of the clutch wheel (3.1) and the doublerolling wheel (4K) is lifted high up for a case if veneer sheet withlarge thickness.
 5. An embryo loading device used for the veneerhorizontal jointing machine, characterized in that a pair of doublerolling wheel (4K) in the double rolling wheel part (4) is replaced bytwo clutch rollers (4.1C), wherein; two clutch rollers (4.1C) arearranged opposite each other and have the same design in terms of shape,size, taper and tilt, the inclined direction of the shaft is coincidingwith the inclined direction of the clutch roller shaft (3.1); a conicalsurface of the clutch rollers (4.1C) is smoothed or roughened with aroughness of less or inure so that the effect is consistent with thereality; and clutch roller (4.1C) rotated freely without driving becausea clutch roller shaft (4.1.1C) linked via two bearings which arefastened to the under end of each sliding rail (4.5C) with the inclinedvertical surface so that the clutch rollers (4.1C) is also inclined to asmall conical head about 10 degrees so that the birth path where thecontact with the surface of a veneer sheet is always horizontalcorresponding and symmetrical with a clutch wheel (3.1) in a clutch gearwheel part (3), which is arranged below a sliding table (2).
 9. Theembryo loading device used for the veneer horizontal jointing machineaccording to claim characterized in that two clutched rollers (4.1C)replaced for the two double rolling wheels according to the firstembodiment, are designed to be opposite each other and have the sameshape with two clutch wheels in the first embodiment, but the taper andtilt of the shaft thereof may be equal to or less than or bigger thanthe taper of the taper of the clutch wheel in the lower gear section,and the thickness and diameter of the clutch wheel may also be equal toor smaller or bigger than the clutch wheel in the lower clutch section,the thickness and diameter of the clutch wheel may be equal to orsmaller than or greater than the clutch in the lower gear section. 10.The embryo loading device used for the veneer horizontal jointingmachine according to claim 8, characterized in that a horizontal shaftis tilted toward the small conical end with an inclination equal to thetaper of the clutch, the conical surface of the clutch rollers (4.1C)can be smoothed or roughed with a roughness from small to large so thatthe effect is consistent with the reality.